Abstract:
Health effect of indoor respirable fine particulate matters, at counter money room Finance Division of Chulalongkorn University, Credit Co-operative of Chulalongkorn University, Bangkok Mass Transit System Public Co.ltd Building, Bank of Ayudhya Public Co.ltd and KrungThai Bank Public Co.ltd were PM₁₀ and PM₂.₅ sampling with the personal air sampler attached size selected impactor cascade. The particulate concentrations were analyzed by Gavimetric method using an electronic microbalance. The health effects were studied by NIOSH indoor and work place questionnaires. The eight hour working average concentration of indoor particulate matter(PM₁₀) at counter money room Finance Division of Chulalongkorn University, Credit Co-operative of Chulalongkorn University, Bangkok Mass Transit System Public Co.ltd Building, Bank of Ayudhya Public Co.ltd and KrungThai Bank Public Co.ltd were 36.3±4.6 µg/m³, 50.0±6.6 µg/m³, 57.2±5.2 µg/m³, 44.1±5.0 µg/m³, and 44.4±7.6 µg/m³, respectively. The average concentrations of indoor particulate matters were correlated with the exposure concentration in all sites. The highest ambient concentration PM₂.₅ and PM₁₀ were 38.5±4.1 µg/m³ and 42.6±4.1 µg/m³ at Bangkok Mass Transit System Public Co.Itd Building. The overall results from questionnaire have not shown the related health impact. However, the eye irritation symptoms were significantly associated with fine particulate matter concentrations with Odd Ratio 7.778 (95%CI 1.44-41.780, p < 0.05).